fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-SNYK-3037342

package-lock.json

@@ -5715,9 +5715,9 @@
       }
     },
     "snyk": {
-      "version": "1.685.0",
-      "resolved": "https://registry.npmjs.org/snyk/-/snyk-1.685.0.tgz",
-      "integrity": "sha512-pVAI7tbvPOqDLY75eHsbmAoY3ZQsHikiaCDK1w96MYY/yke35fUACe2z8XIjcBgC+lD7joycBdrS0wbORu10Ew=="
+      "version": "1.996.0",
+      "resolved": "https://registry.npmjs.org/snyk/-/snyk-1.996.0.tgz",
+      "integrity": "sha512-nq//Ely0bSt50LzX9Er5lCQNqTpaKn7I7xkhUB3Z+8rs8Jqha360HeQwhbVzsuQS3xT/1+36zt6CcgyLPM1QbA=="
     },
     "source-map": {
       "version": "0.6.1",

package.json

@@ -9,7 +9,7 @@
   "dependencies": {
     "restify": "^8.1.1",
     "vm2": "^3.9.6",
-    "snyk": "^1.685.0"
+    "snyk": "^1.996.0"
   },
   "devDependencies": {
     "eslint": "^4.19.1",